Hotel room lock



ATMP/YE Dec. 24, 1963 P. P. KUBIK HOTEL ROOM LOCK Filed April 24, 1961 United States Patent O 3,115,357 HTEL IRM LCK Paul l. Kubilr, Ambier, Pa., assigner to The Yale and Towne Manufacturing Company, Stamford, Conn., a corporation ot Connecticut Filed Apr. 24, 1961, Ser. No. 104,913 4 Ciaims. (Cl. 292-5) This invention relates to a novel hotel room door lock.

It will be appreciated that while hotel room locks do have knobs or lever handles at each side, the outside knob or handle is generally held fixed. Therefore, a person who wishes to gain admittance to a room must use a key. That insures the automatic locking of the door when a guest or a maid leaves the room. Nevertheless, it is customary to provide the locks with additional security that allows the guest more privacy, by equipping the locks with locking means to be actuated when the guest is in the room. The novel contribution of my invention is a lock of this class equipped with a novel form of mechanism that can be deadlocked by the occupant of the room and automatically released when the lock is operated bythe occupant in leaving the room.

My lock here shown is of that type in which a casing is placed in a rectangular notch cut in the edge of a door. A spring-pressed latch bolt is mounted on the casing and is retracted by key operation from the outside and knob operation on the inside. As a feature of my invention, I equip my lock with a deadbolt that will be projected into a strike through the operation of a finger piece at the inner side of the door, whereby to lock the door. While projecting the deadbolt, the linger piece will also dog the latch bolt into projected position, thereby effecting double deadlocking of the door.

As a further feature, to which I have already alluded, the inside knob oi the lock is always effective automatically to retract the latch bolt and also the deadbolt, if the deadbolt has previously been thrown. That construction contributes panic proof operation and is most important.

I have thus outlined rather broadly the more important features of my invention in order that the detailed decription thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those ski led in the art will appreciate that the concepton on which my disclosure is based may readily be utilized as a basis for the designing of other structures for carrying ont the several purposes of my invention. It is important, therefore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of my invention, in order to prevent the appropriation o my invention by those skilled in the art.

In the drawing:

FlG. 1 shows my novel hotel room door lock mounted on a door;

FIG. 2 shows a longitudinal section of my lock taken On the broken line 2F2 in FG. 3;

FIG. 3 shows a vertical section on the line 3 3 in FIG. 2;

FlG. 4 is like a part of FIG. 3, but shows parts of the lock in deadlocking position.

Referring now more particularly to FIG. l of the drawing, I show my novel lock constructed with a casing 1t) that is adapted to be inserted in a rectangular notch formed in the edge or" a door D. Rather usual inside and outside knobs 11, 12 are supported on the lockcasing 10, and a pair of trim plates 13, one of which is shown in FiG. l, are assembled to the casing at opposed sides ot ICC the door. The front of casing lil has a deadbolt 14 in addition to a beveled latch bolt 15 of a usual type. In my lock, an inside linger piece 16 and also the inside knob 11 will control the bolts 14, 15 in an exceedingly novel way, as will appear.

The deadbolt 14 is adapted to slide between retracted and projected positions relatively to an opening 17 in the front o casing lil, as shown in FIGS. 3 and 4. A rearward portion of deadbolt 14 has a cross pin 18, the ends of which extend from opposed sides of the bolt 14, FG. 2, and engage in grooves 19 so as to slide on opposed sides of the casing 1). The rearward portion of deadbolt 1d also has a longitudinal slot 2t? across which the pin 13 extends. Latch bolt 15 is mounted to rotate on a pivot pin 21, shown in dotted lines in FIGS. 2 and 3, and is pressed to a projected position relatively to the casing by a coil spring 22, FIG. 3, that is engaged between latch bolt 15 and a cross plate 23 on the casing.

The linger piece 16 that I utilize in my novel lock has a stem 25, FIGS. 2 and 3, that rotates on the casing 10. Stem 2S is equipped with an integral cam member 26 having an end portion 126 that extends into the longitudinal slot 20 in deadbolt 14, intermediate the inner end of the slot 2t? and the cross pin 1S. Thus, the cam member 26 when rotated by the linger piece 16 will move deadbolt 14 to projected and retracted positions. Moreover, I form cam member 26 with a dwell 27 that will coact with the pin 18 to dog the deadbolt 11% in retracted position, cam member 26 also having an end surface 28 that will move into opposed relation to an inclined surface 29 on deadbolt 14, so as to dog that bolt in projected position.

I further form the cam member 26 with a latch bolt clogging portion 3i), best seen in FIG. 4. That clogging portion 3b is so arranged on cam member 25 as to move behind the latch bolt 15 when the cam member 26 is rotated to position projecting the deadbolt 14, FIG. 4. rThereby the nger piece 16, when rotating cam member 26 to project deadbolt 14, also will dog latch bolt 15 in projected position. When linger piece 16 is rotated in the opposed direction, cam Z6 will retract deadbolt 14 and free the latch bolt 1d, the bolts then being in the position shown in FIG. 3. Cam member 26 has also an angular oitset portion 26a, FIG. 3, that will act in a novel way as I shali presently describe.

l equip the lock casing 1t? with a spring 31 that coacts with surfaces 322, 33 on cam member 26 to press that member toward its deadbolt projecting and retracting positions. Spring 31 naturally yields to allow member 26 to be rotated by the linger piece 16, but will hold member 26 firmly in its clogging positions so that the deadbolt 14? cannot be moved merely through vibration applied to the lock.

I utilize in my novel lock a sliding retractor 35 that is generally C-shaped, as shown in FIG. 3, with upper and lower portions 36 that are integrally connected by a vertical forward portion 37. The retractor 3S is pressed toward bolt projecting position by a pair of springs 38, and is adapted to be moved in bolt retracting direction by a cam portion 39 on a spindle d@ that will be rotated by inside knob 11. The outside knob 12 has a spindle Litta, a part of which is shown in FIG. 2, but that spindle 46a is fixed, as is usual on hotel room locks, through means not shown. A key actuated cam dit!) rotates Within spindle den, enabling a person outside the door to move retractor 3S through the use of a key.

Retractor 35 has a vertical pin d1 that is connected through one or more links d?. to the beveled latch bolt 1 5, enabling retractor 35 to retract bolt 15 against the pressure of spring 22. Links 42 are connected so as to allow some lost motion between retractor 35 and bolt l5, as through a pin and slot connection d3 indicated by dotted lines in FIG. 3. In addition to the links 42, I connect a further link to the vertical pin di on retractor 35. That plate or link i4 is generally T-shaped, as shown in dotted lines in FIG. 2, being formed at its forward end with portions d5, lo extending in opposed directions. Medially between the portions 45, 46, a slot 47 extends longitudinally. The opposed portions d5, 46 are engaged 1n grooves 4S so as to slide longitudinally on opposed sides of casing lo, while the slot 47 allows clearance for the movements of link relatively to cam member 26.

Referring to FIG. 3, it will be seen that the angular portion 26a on cam member 2o will lie below link #lli when member 2o is in deadbolt retracting position. The arrangement is such that angular portion 26a will extend in opposed relation to the end portion on link d4, as shown in FIG. 4, when cam member 2o is rotated to deadbolt projecting position. he link 44 then can act against the cam portion 26o, enabling,7 retractor 3:5 to rotate cam member 26 to deadbolt retracting position. The latter part of that rotation will be assisted by the spring 3l acting against the surface on member 2o, as in FIG. 3, insuring that member 2,6 fully dogs deadbolt i4 in retracted position. Thus when actuated, the retractor 35 will be effective Jfor freeing the latch bolt l5 and retracting deadbolt ld, while moving to retract the latch bolt.

It will be appreciated that the construction I have described will require no particular actuation of the finger piece 16 when the occupant of the room wishes to open the door. It will merely be necessary to rotate the inside knob il, retracting deadbolt ld along with latch bolt l5, if the deadbolt was in locking position.

articular details of the lock case It@ are not important 'to an understanding of my invention, but for purposes of disclosure I show the case lil equipped with upper and lower frame plates 5l, FlG. 3, that in their assembled position will support the cross plate 23, and also spaced plates 52, FIG. 2, between which the retractor 35 will slide. The plates 52 are integrally assembled to bearing sleeves 53 that support the inside and outside knob spindles 4t), 40a.

I believe that the construction and operation of my novel hotel room door lock will now be understood, and that its advantages will be fully appreciated by those persons skilled. in the art. I am able through the novel concept of my invention to project a deadbolt and also to deadlock a latch bolt, merely through the operation 0f an inside linger piece. Thereby the occupant of the room may very easily eect double deadlocking of the door. Moreover, a person leaving the room need never Operate the linger piece lo, since both bolts will be retracted merely through operation of the inside knob ll, contributing panic-proof operation of my lock.

l now claim:

1. In a lock of the class described, a casing, a latch bolt spring-pressed to a projected position relatively to said casing, a deadbolt moving between retracted and projected positions relatively to the casing, an actuating cam coactingl with said deadbolt, a portion of said cam coacting with the latch bolt to dog the latch bolt in its projected position when said cam projects said deadbolt, a retractor connected to the latch bolt, a knob for actuating said retractor to retract the latch bolt, and a `link extending between said retractor and the deadbolt actuating cam, so that the retractor when actuated by said knob moves said cam to position retracting the deadbolt,

While also freeing the latch bolt.

2. In a lock of the class described, a casing, a latch bolt springpressed to a projected position relatively to said casing, a deadbolt, a cam coacting with said deadbolt, a finger piece for rotating said cam to project and retract said deadbolt relatively to the casing, a portion ot the cam clogging said latch bolt in its projected position when said cam rotates to project said deadbolt, a retractor mounted to slide on the casing, a link extending between said retractor and latch bolt, a further link extending between said retractor and said cam, and a knob for sliding said retractor, so that said further link rotates the cam to position retracting the deadbolt and freeing the latch bolt while the retractor retracts the latch bolt through the first link.

3. ln a lock or" the class described having a casing, and a spring pressed latch bolt and a deadbolt mounted each for movement between retracted and projected positions relatively to the front of said casing,

a knob actuated latch bolt retractor that is mounted in position longitudinally aligned with the deadbolt and latch bolt on a rearward part of the casing,

a ringer piece actuated cam mounted in position intermediate the retractor and the front of the casing,

a portion on said cam coacting with the deadbolt for moving said deadbolt,

a further portion on said cam moving into opposed relation to a surface on the latch bolt to dog the latch boit in projected position when said cam is actuated to project the deadbolt,

and means through which the rctractor when actuated will move said cam to position retracting the deadbolt and freeing the latch bolt.

4. In a lock of the class described having a casing, and a spring pressed latch bolt and a deadbolt mounted each for movement between retracted and projected positions relatively to the front of said casing,

a knob actuated retractor that is mounted to slide in longitudinally aligned relation to the deadbolt and latch bolt on a rearward part of the casing, link extending longitudinally between the retractor and latch bolt and through which the retractor retracts the latch bolt,

a linger piece actuated cam mounted to rotate in position juxtaposed to the latch bolt and deadbolt on the casing,

a portion on said cam coacting With the deadbolt for projecting and retracting said deadbolt when said cam rotates,

a further portion on said cam moving into opposed relation to a surface on the latch bolt to dog the latch bolt on projected position when said cam is rotated to project the deadbolt,

and a further longitudinal link through which the retractor rotates said cam to retract the deadbolt and to place said further portion of the cam in position freeing the latch bolt for retraction by said retractor.

References Cited in the iile of this patent UNITED STATES PATENTS 2,303,624 Edwards et al, Dec. l, 1942 

1. IN A LOCK OF THE CLASS DESCRIBED, A CASING, A LATCH BOLT SPRING-PRESSED TO A PROJECTED POSITION RELATIVELY TO SAID CASING, A DEADBOLT MOVING BETWEEN RETRACTED AND PROJECTED POSITIONS RELATIVELY TO THE CASING, AN ACTUATING CAM COACTING WITH SAID DEADBOLT, A PORTION OF SAID CAM COACTING WITH THE LATCH BOLT TO DOG THE LATCH BOLT IN ITS PROJECTED POSITION WHEN SAID CAM PROJECTS SAID DEADBOLT, A RETRACTOR CONNECTED TO THE LATCH BOLT, A KNOB FOR ACTUATING SAID RETRACTOR TO RETRACT THE LATCH BOLT, AND A LINK EXTENDING BETWEEN SAID RETRACTOR AND THE DEADBOLT ACTUATING CAM, SO THAT THE RETRACTOR WHEN ACTUATED BY SAID 